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ACI-ASTM CN3M Steel vs. ACI-ASTM CT15C Steel

Both ACI-ASTM CN3M steel and ACI-ASTM CT15C steel are iron alloys. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is ACI-ASTM CN3M steel and the bottom bar is ACI-ASTM CT15C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
23
Fatigue Strength, MPa 150
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
76
Tensile Strength: Ultimate (UTS), MPa 500
500
Tensile Strength: Yield (Proof), MPa 190
190

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Maximum Temperature: Corrosion, °C 430
560
Maximum Temperature: Mechanical, °C 1100
1080
Melting Completion (Liquidus), °C 1450
1410
Melting Onset (Solidus), °C 1400
1360
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 13
12
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 31
36
Density, g/cm3 8.1
8.0
Embodied Carbon, kg CO2/kg material 5.9
6.1
Embodied Energy, MJ/kg 80
88
Embodied Water, L/kg 200
190

Common Calculations

PREN (Pitting Resistance) 38
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
90
Resilience: Unit (Modulus of Resilience), kJ/m3 89
93
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 17
17
Thermal Diffusivity, mm2/s 3.4
3.2
Thermal Shock Resistance, points 11
12

Alloy Composition

Carbon (C), % 0 to 0.030
0.050 to 0.15
Chromium (Cr), % 20 to 22
19 to 21
Iron (Fe), % 42.4 to 52.5
40.3 to 49.2
Manganese (Mn), % 0 to 2.0
0.15 to 1.5
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 23 to 27
31 to 34
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 1.0
0.15 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030